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In order to refine blister copper it is ...

In order to refine blister copper it is melted in a furnance and is strirred with gree longs of woman the purpose is

A

To expel the dissolved gases in the blister

B

To bring the impurities to surface and oxidise them

C

To increase the carbon content of copper

D

To reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood

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The correct Answer is:
D
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AAKASH SERIES-PRINCIPLES OF METALLURGY-PRACTICE EXERCISE
  1. The metal that can be obtained even by the electrolysis of its aqueous...

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  2. the most electropositive metals are isolated from their ors by

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  3. In order to refine blister copper it is melted in a furnance and is st...

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  4. Electric furnaces are lined with magnesia because

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  5. The separation of lanthanoids by the ion exchange method is based on

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  6. Metal carbonate is converted to the corresponding metal oxide usually ...

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  7. Blast furnace is used in the extraction of the metal

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  8. Nickel steel is used in making

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  9. Carbonate or hydroxide ores are generally converted to their oxides by

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  10. Most abundant metal in the earth's crust is

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  11. Gravity separation method is based upon

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  12. Among the following statements the incorrect one is

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  13. Refractory metals are used in construction of furnaces because

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  14. The substance widely used to remove silica present as impurity, from t...

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  15. Extraction of aluminium from aluminium oxide (Al(2)//O(3))is het done ...

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  16. the most electropositive metals are isolated from their ors by

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  17. Siderite mineral is

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  18. Chemical composition of malachite is 'X'. Then the composition of azur...

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  19. In sulphatizing roasting of Zns, products are

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  20. In order to refine blister copper it is melted in a furnance and is st...

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